<ol>
  <li>
    George Pruitt, John R. Hill, Michael Russak (September 2012). Building Winning Trading Systems, page 126, <a href="http://www.wiley.com/WileyCDA/WileyTitle/productCd-1118168275.html"> Online Copy</a>
  </li>
  <li>
    Robert C. Miner(October 20, 2008). High Probability Trading Strategies: Entry to Exit Tactics for the Forex, Futures, and Stock Markets, page 37, <a href="https://www.amazon.com/High-Probability-Trading-Strategies-Tactics/dp/0470181664"> Online Copy</a>
  </li>
  <li>
</ol>
